If they are humans:
1. Why do they have pony ears?
2. Why do they have pony colored skin?
3. If they're trying to match the ponies (which, apparently, they are) then why do they have wings, but not horns?
4. Why does Applejack have lipstick?
No, seriously. Why. All of the why.
I said I would withhold all judgment until it debuts, but…it's becoming increasingly difficult to restrain myself from hating this.

Also, ears on the top of their head = fine by Hasbro.
Wings on humans = fine by Hasbro.
Unicorn horns on humans = WHAT THE FUCK ARE YOU THINKING NO HORNS ON PEOPLE GOD